Spraying device



March 7, 1939; T; J BEREGH 2,149,266

SPRAYING DEVICE Filed Sept. 29, 1936 2 Sheets-Sheet 2 INVENTQR. 7 7 500095 J fiERm/v.

, ATTORNEY.

- Patented Mar. 7, 1939 sraarnm DEVICE Theodore J. Beregh, Patchogue, N. Y., assignor to Bcregh Manufacturing Co. Inc., New York, N. Y., a corporation of New York e Application September 29, 1936, Serial No. 103,078

a claims. (01. 101-416) r-This invention relates'to spraying devices, and more particularly to such as are employed in connection .with printing presses for spraying freshly printed sheets to prevent offsetting.

. Objects Among the principal objects which the present 7 invention has in view are:--to provide improved means for spraying freshly printed sheets; to 10 obtain coordination of the spraying means with the delivery of the freshly printed sheets; to likewise coordinate the spraying with the press controls; to avoid repeated spraying of a sheet when anothersheet is not fed through the press; 15 toutilize air pressure developedin operation of the press; to provide a structure adaptable to various sizesand types of presses of present day manufacture; to provide for emergency opera tion; to secure simplicity of construction and op- '20 eration; and to obtain other advantages and results as may be brought out in the following description.

Referring to the accompanying drawings in which like numerals of reference indicate simi- 25 lar parts throughout the following and several views:- V

Figure l is a perspective view of the invention applied to a conventional printing press wherein the type. bed reciprocates under rollers which 30 feed the paper;

Figure 2 is a perspective view of a part of the pressshowing the type bed and the aircushions employed in connection therewith; and

Figure 3 is a perspective view of the invention 5 on a scale considerably enlarged over that of I Figure 1 and showing fragmentary portions of the printing press.

Description Inthe specific embodiment of the invention' illustrated in said drawings, the reference nu- -mera1 I indicates the stationary frame work of the printing press. This frame work includes appropriate tracks or runways II for a recipro- 45 eating type bed plate l2 which is cushioned at same with a. suitable liquid, preferably atomized, to prevent offsetting.

According to the present invention a spray gun I9 is mounted above the position of the paper where spraying is to take place. The details of construction of the spray gunneed not be discussed at length, because there are many guns on the market which may be employed. The construction includes means for receiving the liquid and discharging the same in 'an atomized spray 10 by air pressure usually operating across or adjacent to the discharge nozzle for the liquid, this part of the spray gun usually being referred to as an atomizer. The spray gun likewise generally includes a trigger for controlling the entry of air pressure to the atomizer. For illustrative purposes I have indicated a plunger valve for controlling the air pressure and have shown a trigger 2| in engagement with said plunger valve arranged so that pulling the trigger by such 20 means as link 22 will slide the plunger valve to open position and admit air to the atomizer and release of the trigger will permit the plunger valve to drop by gravity or otherwise, as under influence of spring pressure, to close the valve and stop the flow of air. The atomizer likewise provides means, such as pipe connection 23, for admitting fluid thereto. This, connection 23 is' shown piped, as at 24, to a suitable source of supply which in this instance consists of a tank 25 from which liquid may flow by gravity to the atomizer. It will be understood, however, that pressure feed other than gravity may be employed for the liquid if desired.

The airv pressure for supplying the air to the atomizer is preferably derived from the cushion cylinder l3. For this purpose I have shown the several cushion cylinders tapped next their closed ends with pipe connections 28 which feed air pressure created to a storage tank 21. amount of air to operate the atomizer I9 is relatively not very great, and the pipe connections 26 from the cushion cylinders l3 may therefore be very small incapacity and thus permit no undue loss of air required for cushioning purposes. If desired, however, check valves 28 may be appropriately placed in the pipe line both for preventing loss of air between the cushion cylinders and for preventing loss of air from the storage tank back to the cylinders.

The tank 21 has a suitable pipe line 29 to the spray gun, so that air pressure is continuously present for utilization in the atomizer whenever plunger valve 20 is opened.

Operation of the trigger 2! is preferably coordi- The 4 nated with the operation of the press, so that plunger valve 2|] is opened only at the time that printed sheets I! arrive beneath the atomizer. The press includes as part of its control mechanism, a lever 30 which swings back and forth to obtain an intermittent rotation of an ink roll 3|. According to the present invention as illustrated, I have chosen to operate the spray gun trigger from the said lever 30. This choice of lever 30 is made by preference because of the fact that when the throw-out mechanism of the press is operated to omit printing a sheet for any purpose, this lever 30 likewise stops swinging. As a result of making this or similar connection to the operating mechanism of the press, there is no duplication of spraying of a sheet resultant from omission of the next subsequent sheet as the delivery carrier reciprocates.

I have shown a standard 32 mounted at the side of the press, as by a bracket 33 secured to frame Hi, this standard supporting at a lower part thereof a first class lever 34. One end of this lever is directed toward the ink roll operating roller 3| and is connected therewith by suitable means such as chain 35. Oscillating lever 30 therefore imparts corresponding oscillation to lever 34, the opposite end of which is pivoted to a shackle 36 having an upwardly extending rod 31 guided in a bracket 38 from standard 32. A compression spring 39 between bracket 38 and shackle 36 tends to lower the end of lever 34 attached to the shackle and opposes the tension exerted by chain 35. Thus, when tension of the chain is released the lever 34 returns to its normal position, that is to say, with the guider rod 31 pulled downward. The upper end of this rod 31 is connected by another means, such as chain 40, to intermediate lever 4| which in turn is connected by'link 42 to one arm 43 of a bell crank lever pivoted, as at 44, to an upper part of the standard 32, said bell crank lever having its other arm 45 connected to the link 22 from the trigger 2| of the spray gun. When the spring 39 functions to lower rod 31, the trigger 2| is consequently tripped or pulled and plunger valve 20 is opened. The ink roller lever 30 therefore functions, through chain 35, to open the plunger valve through the several connections described. In event a sheet is not to be printed, the press mechanism causes the roller lever 30 to stop in its position drawing upon said chain 35, and thus no opening of the spray gun valve is permitted until the throw-out mechanism is again operated to cause printing of the sheet.

In order to keep the several connections in taut condition at all times, tension spring 46 may be applied to arm 43 of the bell crank lever. The tension of this spring 46, however, can be overcome by tension of spring 39 which will function as above described to trip the trigger and open valve 20.

shown in association with lever 34.

For emergency purposes, should one of the chains 35 or 40 become broken, for instance, intermediate lever 4| may have a link 41 provided which can be connected to another operating part of the press. As here shown the link 41 is shown adapted to be engaged in a transmission lever 48 for oscillating the delivery carrier. This linkage connection 41 may be one which will swing intermediate lever 4| positively back and forth without intervention of spring connection such as When this link connection is employed, therefore, operation of the trigger is positive and continuous for each reciprocation of the delivery carrier whether the carrier conveys sheet I! or not. It is therefore, preferable to use this link connection only for emergency purposes. Its showing in this application is to illustrate the broad conception of use of a supplemental operating connection from a different part of the press control mechanism.

I claim:

1. A spraying device comprising a standard, an atomizer supported from said standard, a valve and trigger for said atomizer, said valve having means tending to normally close the valve and said trigger when operated functioning to open said valve, a lever on said standard, means connecting said trigger and lever, said means providing a spring for exerting tripping tension on the trigger, and means for swinging said lever to relieve said tension and enable the valve to operate under influence of said means tending to close the valve and in a direction adverse to the direction of operation exerted by said spring tension.

2. A spraying device comprising in combination with an atomizer having a valve and trigger, said valve having means tending to normally close the same and said trigger when operated functioning to open said valve, a linkage connection for remote control of said trigger, a spring for normally operating said linkage connection and trigger into position permitting said valve to be closed by its means tending to close the same, and a second spring acting upon said linkage adverse to and of greater effective strength than the first said spring for overcoming the tension of the first spring and operating the trigger to open the valve, and means for relieving the linkage of the tension of said second spring for enabling the first spring to be effective upon the trigger to release the'valve from actuation by said trigger.

3. In a printing press, the combination with a plurality of moving parts, an atomizer positioned to spray sheets after the sheets have been printed,

.a lever and linkage for operating the atomizer THEODORE J. BEREGH. 

